DE102006045366A1 - Vehicle passenger restraining method, involves supplying belt pretensioner of safety belt with auxiliary force that is exerted as momentum, which is upstream to crash-time point, in thorax region of vehicle passenger in pre-crash-phase - Google Patents
Vehicle passenger restraining method, involves supplying belt pretensioner of safety belt with auxiliary force that is exerted as momentum, which is upstream to crash-time point, in thorax region of vehicle passenger in pre-crash-phase Download PDFInfo
- Publication number
- DE102006045366A1 DE102006045366A1 DE200610045366 DE102006045366A DE102006045366A1 DE 102006045366 A1 DE102006045366 A1 DE 102006045366A1 DE 200610045366 DE200610045366 DE 200610045366 DE 102006045366 A DE102006045366 A DE 102006045366A DE 102006045366 A1 DE102006045366 A1 DE 102006045366A1
- Authority
- DE
- Germany
- Prior art keywords
- belt
- force
- crash
- time
- vehicle passenger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01252—Devices other than bags
- B60R2021/01265—Seat belts
- B60R2021/01272—Belt tensioners
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Zurückhalten eines mit einem Sicherheitsgurt gesicherten Fahrzeuginsassen nach dem Oberbegriff des Patentanspruches 1 bzw. nach dem Patentanspruch 7.The The invention relates to a method and a device for retaining a secured with a seat belt vehicle occupant after the The preamble of claim 1 or according to the claim 7th
Aufgrund strengerer Vorgaben zur Fahrzeugsicherheit ist auch bei großer Unfallschwere zu vermeiden, dass Fahrzeuginsassen mit Teilen des Fahrzeuginnenraumes kollidieren, damit Intusionsverletzungen verhindert werden.by virtue of Stricter requirements for vehicle safety are also in the event of severe accident severity To avoid occupants with parts of the vehicle interior collide to prevent intractable injuries.
So
ist aus der
Aus
der
Mit diesen bekannten Verfahren wird im Kollisionsfall ein Insassenkontakt mit Innenraumteilen des Fahrzeugs mit dem Nachteil verhindert, dass die Rückhaltesysteme eine große Gurtkraft auf den Brustkorbbereich des Insassen ausüben. Dadurch kommt es insbesondere bei älteren Menschen häufig zu Rippen-/Rippenserienfrakturen. Dies liegt darin begründet, dass die biomechanische Belastbarkeit bei älteren Menschen stark eingeschränkt ist. Zum einen reduziert sich mit dem Alter der Anteil an elastischen gegenüber eher kristallinen Bestandteilen in den Knochen; zum anderen nimmt der effektive Knochenquerschnitt mit dem Alter ab. Weiterhin nimmt die Knorpel-Elastizität mit dem Alter ab, wie auch die Beweglichkeit der Gelenke, insbesondere der im Brustkorbbereich vorhandenen kleinen Gelenke.With This known method is in the event of a collision occupant contact with interior parts of the vehicle with the disadvantage that prevents the restraint systems a big Exert belt force on the chest area of the occupant. This comes especially in older ones People often too Rib / rib fractures series. This is due to the fact that the biomechanical resilience in older people is severely limited. On the one hand, the proportion of elasticity decreases with age across from rather crystalline components in the bones; to the other takes the effective bone cross-section decreases with age. Furthermore, the Cartilage elasticity with age, as well as the mobility of the joints, in particular the small joints present in the ribcage area.
Die Aufgabe der Erfindung besteht darin, ein Verfahren oder eine Vorrichtung zum Zurückhalten eines mit einem Sicherheitsgurt gesicherten Fahrzeuginsassen im Fahrzeugsitz bereitzustellen, bei dem der Brustkorbbereich von insbesondere älteren Menschen im Kollisionsfall vor Verletzungen geschützt ist.The The object of the invention is a method or a device to hold back one secured with a seat belt vehicle occupants in the vehicle seat in which the chest area of especially elderly people is protected against injury in the event of a collision.
Die Aufgabe ist gelöst durch die Merkmale des Patentanspruches 1 oder des Patentanspruches 7. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen offenbart.The Task is solved by the features of claim 1 or of claim 7. Advantageous developments of the invention are disclosed in the subclaims.
Gemäß dem kennzeichnenden Teil des Patentanspruches 1 wird in einer Pre-Crash-Phase mittels des Gurtstraffers eine zusätzliche Kraft als ein Kraftimpuls auf den Brustkorbbereich des Insassen ausgeübt, der dem eigentlichen Unfall-Zeitpunkt vorgelagert ist. Durch den Kraftimpuls erfolgt eine kurzzeitige Brustkorb- bzw. Thorax-Kompression mit einer darauf folgenden Entspannung des Brustkorbbereiches, wodurch die Gelenke im Brustkorbbereich bewegt werden. Dies führt zu einer Steigerung der Elastizität des Brustkorbes des Insassen. Zum eigentlichen Unfall-Zeitpunkt befindet sich der Brustkorbbereich des Insassen daher in einem elastischeren Zustand, wodurch dieser wesentlich größere Gurtkräfte aufnehmen kann, ohne dass es zu Frakturen kommt.According to the characterizing one Part of claim 1 is in a pre-crash phase by means of the belt tensioner an additional Force is exerted as a force impulse on the chest area of the occupant, the upstream of the actual accident date. By the force impulse there is a short-term thorax or thorax compression with a subsequent relaxation of the chest area, thereby the joints in the ribcage area are moved. This leads to a Increase in elasticity of the thorax of the occupant. The actual accident time Therefore, the chest area of the occupant is in a more elastic State, allowing this much greater belt forces can absorb without it comes to fractures.
Um nach dem erfolgten Kraftimpuls eine ausreichende Entspannung des Brustkorbbereiches zu gewährleisten, ist es von Vorteil, wenn der Gurtstraffer unmittelbar mit dem Zeitpunkt der Erfassung eines kritischen Fahrzustands den Kraftimpuls innerhalb eines ersten Zeitintervalls ausübt und der Kraftimpuls über ein folgendes zweites Zeitintervall vom eigentlichen Unfall-Zeitpunkt beabstandet ist. Bevorzugt ist es dabei, wenn das dem Kraftimpuls zugeordnete erste Zeitintervall zwischen 50% und 80% der gesamten Pre-Crash-Phase einnimmt. D. h., dass bei einer Pre-Crash-Phase von 100 ms der Kraftimpuls innerhalb der ersten 50 bis 80 ms erfolgt und der Brustkorbbereich in den folgenden 50 bis 20 ms entspannen kann, bis zum Zeitpunkt tC der Unfall eintritt.In order to ensure sufficient relaxation of the chest area after the power pulse, it is advantageous if the belt tensioner immediately at the time of detecting a critical driving state, the force pulse within a first time interval and the force pulse over a subsequent second time interval from the actual accident time is spaced. In this case, it is preferable if the first time interval assigned to the force pulse occupies between 50% and 80% of the total pre-crash phase. That is, in a pre-crash phase of 100 ms, the force pulse occurs within the first 50 to 80 ms and the chest area can relax in the following 50 to 20 ms until the accident occurs at time t C.
Um eine wirksame Thorax-Kompression d. h. eine wirksame Vordehnung des Brustkorbbereiches zu erreichen, kann der Kraftimpuls bevorzugt auf einen Wert zwischen 4 kN und 8 kN ansteigen. Die Größe der dabei ausgeübten Kraft kann bevorzugt in der Größenordnung einer maximalen Gurtkraft eines zugeordneten Gurtkraftbegrenzers liegen. Zur weiteren Steigerung der Elastizität des Brustkorbbereiches ist es vorteilhaft, wenn nach erfolgtem Kraftimpuls der Gurtstraffer die Gurtkraft auf einen Wert reduziert, der der ausgeübten Gurtkraft vor dem Kraftimpuls entspricht. Die vor und nach dem Kraftimpuls ausgeübten Gurtkräfte sollen dabei eine Lose des Gurtes am Körper des Insassen vermeiden und können daher entsprechend geringfügig dimensioniert sein, etwa in einem Bereich von 5 N.Around an effective thorax compression d. H. an effective pre-stretching reach the chest area, the power pulse can preferably on increase between 4 kN and 8 kN. The size of the case exerted Force may be preferred in the order of magnitude a maximum belt force of an associated belt force limiter lie. To further increase the elasticity of the ribcage area it is advantageous if after the power pulse of the belt tensioner reduces the belt force to a value which is the force exerted on the belt before the force pulse corresponds. The before and after the power pulse exerted belt forces should thereby avoid a loose of the belt on the body of the occupant and can therefore correspondingly small be dimensioned, for example in a range of 5 N.
Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der beigefügten Figuren beschrieben.following is an embodiment the invention with reference to the attached Figures described.
Es zeigen:It demonstrate:
In
der
Der
Wickelzylinder
In
der
Gemäß der
Dem
in der
- 11
- Sicherheitsgurtsafety belt
- 33
- Wickelzylinderwinding cylinder
- 55
- Gurtstrafferpretensioners
- 77
- Auszugssperreremoval barrier
- Δt.delta.t
- Pre-crash-PhasePre-crash phase
- Δt1 Δt 1
- erstes Zeitintervallfirst time interval
- Δt2 Δt 2
- zweites Zeitintervallsecond time interval
- tE t E
- Zeitpunkt der Erfassung eines kritischen Fahrzustandstime the detection of a critical driving condition
- tC t C
- Unfall-ZeitpunktAccident time
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610045366 DE102006045366A1 (en) | 2006-09-26 | 2006-09-26 | Vehicle passenger restraining method, involves supplying belt pretensioner of safety belt with auxiliary force that is exerted as momentum, which is upstream to crash-time point, in thorax region of vehicle passenger in pre-crash-phase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610045366 DE102006045366A1 (en) | 2006-09-26 | 2006-09-26 | Vehicle passenger restraining method, involves supplying belt pretensioner of safety belt with auxiliary force that is exerted as momentum, which is upstream to crash-time point, in thorax region of vehicle passenger in pre-crash-phase |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006045366A1 true DE102006045366A1 (en) | 2008-04-03 |
Family
ID=39134129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610045366 Withdrawn DE102006045366A1 (en) | 2006-09-26 | 2006-09-26 | Vehicle passenger restraining method, involves supplying belt pretensioner of safety belt with auxiliary force that is exerted as momentum, which is upstream to crash-time point, in thorax region of vehicle passenger in pre-crash-phase |
Country Status (1)
Country | Link |
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DE (1) | DE102006045366A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10204477A1 (en) * | 2002-02-05 | 2003-08-21 | Daimler Chrysler Ag | Belt tensioner has retraction device connected via two parallel couplings to retraction motor switchable between two power ranges, with one for low force transfer, and normally open one for higher forces |
EP1749717A1 (en) * | 2005-08-05 | 2007-02-07 | Takata Corporation | Seat belt retractor, seat belt apparatus, and vehicle with a seat belt apparatus |
-
2006
- 2006-09-26 DE DE200610045366 patent/DE102006045366A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10204477A1 (en) * | 2002-02-05 | 2003-08-21 | Daimler Chrysler Ag | Belt tensioner has retraction device connected via two parallel couplings to retraction motor switchable between two power ranges, with one for low force transfer, and normally open one for higher forces |
EP1749717A1 (en) * | 2005-08-05 | 2007-02-07 | Takata Corporation | Seat belt retractor, seat belt apparatus, and vehicle with a seat belt apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20130927 |